English
1. General
The purpose of this manual is to provide the necessary information for the installation, use and maintenan-
ce of the FL - FLD
series pumps. Instructions for disassembly and assembly are also provided, together
with a comprehensive troubleshooting chart.
2. Preliminary inspection
After unpacking the pump make sure that no damage has occurred during shipping.
Should the pump be damaged, please inform our agent within 10 days from the delivery date.
3. Applications
FL-FLD series pumps are designed to handle liquids which are not chemically or mechanically aggressi-
ve, at temperatures from -20°C to +140°C (see values for specific versions).
They can be used in many different applications both in the civil and industrial sector:
• Water supply.
• Sprinklers and irrigation systems.
• Heating.
• Air conditioning.
• Transfer of clean non-aggressive liquids.
4. Working limits
Maximum working pressure: 10 bar for FL-FLD version
Temperature of pumped liquid: -10°C ÷ +130°C for FL-FLD version
Maximum ambient temperature: 40°C
Maximum number of start-up per hour: 20 (at regular intervals) up to 5,5 kW
Admissible voltage fluctuations: ± 10%
WARNING
- infiammable and explosive liquids.
5. Installation
Handling
The product must be handled with care using suitable hoisting equipment.
Impacts can cause damage without any visible external signs. Hoist unpacked products securely
using a sling.
The FL – FLD electric pumps can be installed either in the horizontal or vertical position. However, avoid
installation with the motor underneath to prevent water infiltration into the motor and bearings.
Provide a gate valve upstream and downstream from the pump, and leave a 5 cm clearance between the
fan cover and any large obstacle to ensure free circulation of the motor cooling air. Bleed the pump through
the bleed valve. Do not install the pump at the lowest point in the system to avoid accumulation of depo-
sits. Fill the system completely and bleed it properly.
N.B. Twin pumps: bleed both pumps through the bleed valve on the pump body. If necessary, repeat the
operation several times.
16 bar for FLS-FLSD version
-20°C ÷ +140°C for FLS-FLSD version
15 up to 15 kW
12 for higher power
The pump is not suitable for handling:
- liquids containing abrasives
- liquids with solid and fibrous substances
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